Bead-buffing machine



June 9, 1925. 1,541,762

7 H. A; DENMIRE BEAD BUFFING MACHINE Fild July 9. 1924 5 sheets-Sheet v1 IN VEN TOR.

ATTORNEY.

;9,' 1 925.v 1,541,762 Y H. A. DENMIRE BEAD BUFFING MACHINE Filed July 9. 1924 5 Sheets-Sheet 2 INVENTOR.

ATTORNEY.

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H. A. DENMIRE BEALI BUFFING MACHINE Filed Ju1y' 1924 s sheetssh t s l N VEN TOR. mifir'alaafjjemm re ATTORNEY.

Patented June 9, 1925.

UNITED sra'rss ATENT OFFICE.

HAROLD A. DENMIRE, OF OHIO, ASSIGNOR TO THE GENERAL TIRE AND'RUB- BER COMPANY, OF AKRON, OHIO, A CORPORATION OF OHIO.

BEAD-BUFFiNG Application filed July 9,

'1 0 all whom it may concern:

Be it known that I, HAnoLD A. DENMIRE, a citizen of the United States, and a resident of Akron, county of Summit, State of Ohio, have invented certain new and useful Improvements in Bead-Buffing Machines, of which the following is a specification.

This invention relates to the manufacture of pneumatic tires, and particularly to that operation in the process of manufacturing the tires in which the semi-cured bead or head core is buffed or roughened preparatory to its incorporation with the other elements of the tire casing.

The object of the present invention is to construct a simple and effective machine for performing the buffing operation, which is easily adaptable for tire beads of varying sizes. Itis also an object of the invention to construct a machine which will operate rapidly and with the least'adjustment.

Other objects are accomplished by the machine of the present invention, one form or embodiment of which is illustrated in the accompanying drawings, in which Figure 1 is a side elevation of the improved machine;

Figure 2 is a front elevation thereof; and

Figure 3 is a plan.

The machine comprises a standard 1, on the upper end of which is mounted the main driving motor 2. The motor shaft is pro vided at one end with a long, conical drum 3 and at the other with a grooved supporting roller 1.

The bead is arranged to be placed over the machine so that in operation it will lie in an inclined plane, as indicated in Figure 1, its higher side being supported and driven by the roller 1 and its lower side lying beneath the driving drum 8 and being pressed against the driving drum by a pair of elongated rollers 5 which are arranged parallel to the drum upon a sliding support 6. The support is carried upon a vertically slidable rod 7 which is guided in its movement by a bracket 8 attached to the standard and attached atits lower end to a foot lever 9 which is pivoted at 10. A spring 11 is attached to the foot lever and to the bracket and serves to press the rollers 5 in the direction of the drive roller 3 so 19 cut in the face of the drum.

MACHINE.

1924. Serial No. 725,019.

that the bead B is forced into driving relation with the roller. Adjustable stops 12 are carried upon the rod 7 and serve, by contact with the bracliet, to limit the movement of the rod.

A second bracket 13 is secured to the side of the standard 1 and is provided with an extension 141, in the upper end of which is pivoted a lever 15, one end of which is connected to a belt or chain 16 which passes around pulleys 17, 17 and is attached to the foot treadle 9. The otherend of the lever 15 carries a roller 18 which overlies the bead supporting drum 4 and is in align ment with one of the bead receiving grooves To accommodate beads of different sizes, the drum may be provided with a plurality of grooves 19, as indicated, the lever 15 being adjustable by means of the apertures 20'therein so that it can be located to bring the roller 18 in alignment with the proper groove. A spring 21 is attached to the lever and serves to draw it downwardly against the drum.

It will be observed that the head is held between the lower surface of the drum 3 and the upper surface of the drum 4 by the rollers 5 on the one hand and the roller 18 on the other and that both these instrumentalities are actuated by springs and controlled by the foot treadle 9. When a head is to be taken out of the machine and a fresh one put in its place, depression of the treadle will open up the machine.

A flange 22 may be mounted on the drum l in the rear of the groove which is used to hold the bead and serves as a guiding means for the bead.

On the standard is secured an Lshaped arm 23 which is extended outwardly so as to lie beneath the bead and is provided with a slot 24 in which is adjustably secured a post 25 which carries a tilted brush holder 26 in which is secured a Wire brush 27, through which the head is driven by the rolls 3 and 4. The upper part of the bead is arranged to be brushed by the operator, the secondary hand brush being indicated by the numeral 28.

The bead is guided in its rotary movement by two flanged rollers 29 arranged at each side of the brush, the flanges being arranged below the bead and the rollers being supported by brackets 30. An additional flanged guiding roller 31 is secured upon a bracket 32 on the feeding-in side of the roller 4, the flange being at the top of the roller in this instance. The several rollers 29 and 31 and the brush are adjustable in their supporting brackets so as to accommodate varying sizes of beads.

While the description of the improved machine has been somewhat detailed, it will be understood that the invention is not limited to the specific construction illustrated and described, but may be made in other forms.

What I claim is:

1. In a machine for the uses and purposes set forth, the combination of a motor having a shaft, a bead driving drum upon one end of the motor shaft and a supporting drum on the other end of the shaft, a spring elevated roller beneath the driving drum and a spring depressed roller above the supporting drum, the bead being received between the rollers and the drum, and a brush in the path of the bead.

2. In a machine for the uses and purposes set forth, the combination of a motor having a. shaft, a bead driving drum upon one end of the motor shaft and a supporting drum on the other end of the shaft, a spring elevated roller beneath the driving drum and a spring depressed roller above the driving drum, the bead being received between the rollers and the drums, a brush in the path of the bead, and a common operating lever for the rollers.

3. In a machine of the character described, the combination of a bead driving drum, and a bead supporting drum of bead rollers cooperating with said drums and means for resiliently pressing the rollers against the bead, and a brush through which the bead is moved by said rollers.

4L. In a machine of the character described, the combination of a bead driving drum, and a bead supporting drum of bead rollers cooperating with said drums and means for resiliently pressing the rollers against the bead, a brush through which the bead is moved by said rollers, and guide rollers about the circumference of the bead.

5. In a machine of the character described, a conical driving drum and a grooved supporting drum adapted to receive a tire bead, means to force the bead in contact with said drum, and a brush through which the bead is driven.

6. In a machine of the character described, a conical driving drum and a grooved supporting drum adapted to receive a tire bead, means to force the bead in contact with said drum, guiding rollers arranged about the bead, and a brush through which the bead is driven.

7. In a machine of the character de scribed, a conical driving drum and a supporting drum adapted to receive a tire bead, rollers bearing against said drums, a single lever mechanism to move the rollers from the drums, and a brush through which the bead is driven.

8. In a machine of the character described, a conical driving drum and a supporting drum, a spring pressed roller below the driving drum and a second spring pressed roller above the supporting drum, means to move the rollers away from their respective drums simultaneously, and a brush through which the bead is driven.

HAROLD A. DENMIRE. 

